<div id="container2" class="container">

    <div class="component" id='c1'>
        <div class="cheader">
            拖动头
        </div>
        <span>
        drag proxy1
            </span>
    </div>

    <div class="component" id='c2'>
        <div class="cheader">
            拖动头
        </div>
         <span>
        drag proxy2
        </span>
    </div>

    <div class="component" id='c3'>
        <div class="cheader">
            拖动头
        </div>
         <span>
        drag proxy3
        </span>
    </div>
</div>